Key-lock.



PATENTED JAN. 31, 1905.

B. M. REVOIR.

KEY LOOK.

APPLICATION FILED JULY 13. 1904.

2 SHEETS-SHEET 1.

PATENTED JAN. 31, 1905.

B. M. REVOIR.

KEY LOCK.

APPLICATION TILED JULY 13. 1904.

2 SHEETS-SHEET 2.

A? d. fm.

Patented January 31, 1905.

PATENT @EEicE.

BUR IS U. REVOIR, OF SYRACUSE, NElV YORK.

KEY-LOCK.

SPECIFICATION forming part of Letters Patent No. 781,618, dated January31, 1905.

Application filed July 13,1904. Serial No. 216,891.

To H]; 1171 um f1 'IH/II/Z/ concern.-

Be it known that I, BURTIS M. REVOIR, of Syracuse. in the county ofOnondaga, in the State of New York, have invented new and usefulImprovements in Key-Locks, of which the following, taken in connectionwith the accompanying drawings, is a full, clear, and exact description.

This invention relates to improvements in locks, and refers moreparticularly to the keyoperative locking-bolt and to means ln'ought intoaction by the locking-bolt for locking tho key in the lock or keyholewhen the bolt is moved in one direction.

In outside doors it is desirable to lock the key on the inside when thebolt is locked and at the same time to permit the key to be withdrawnwhen the bolt is locked from the outside and also to permit the key tobe withdrawn from either side when the bolt is unlocked. In the use ofinside doors it is desirable to lock the key in the look when the boltis unlocked. so as to prevent the key from jarring out of the keyhole,and at the same time it is necessary to permit the removal of the keywhen the bolt is locked. in either case it is my purpose to make thekey-locking member or members reversible, to be used for right or lefthand doors.

Uy object, therefore. is to provide the locking-bolt with a key-lockingmember or members capable of meeting the requirements above set forththat is, to provide the locking-bolt with one or more key-lockingmembers capable of being used on either right or left hand doors forlocking the key in place by the movement of the bolt in one directioneither to its locked or unlocked position.

In the drawings,Figure 1 is a plan of the interior mechanism of a lockembodying the features of my invention, the bolt and key and l i ckingelements being shown in their locked or unlocked position. Figs. Qand 3are sectional views taken, respectively, on lines 2 2 and 3 3, Fig. 1.Figs. 1 and 5 are views similar to Fig. 1 of a portion of a lock,showing the bolt in its locked position, but rcversed in Fig. 5 fromthat seen in Fig. 1, these two views representing the bolt as used forright and left hand doors, respectively, or

as used to lock the key on the inner and outer side of the door. Figs. 6and 7 are sectional views taken, respectively, on lines 6 6, Fig. 1, andT T. Fig. 5. Figs. Sand 9 are perspective views showing, respectively,the lockingbolt and the tumbler. Figs. 10 and 11 are views similar toFigs. & and 5, showing a modi lied form of bolt carrying key-lockingmembers which are arranged to lock the key when the bolt is unlocked.Figs. 12 and 13 are sectional views taken, respectively, on lines 12 l2,Fig. 10, and 3 13, Fig. 11. Fig. 11 is a perspective view of thelocking-bolt seen in Figs. 10 to 13. inclusive. Fig. 15 is a perspectiveview of a modified form of lockingbolt in which the key-locking memberis removable. Fig. 1G is a perspective view of the key-locking elementto be used in connection with the locking-bolt seen in Fig. 15 and isadapted to be placed on either side of the lock and bolt and at eitherside of the keyhole, so that it may be used in connection with thelocking-bolt for right and left hand doors and for locking the keyeither at the inside or outside of the door when the lock is in itslocked or unlocked position. Fig. 17 is an edge view of the inner end ofthe lockingbolt seen in Fig. 15, showing the opposed studs for receivingthe key-locking member shown in Fig. 16.

I will lirst proceed to describe the construction seen in Figs. 1 to El.inclusive, which consists of a lock-frame 1, having one side removable,as usual, and provided with a faceplate), having openings 3 and 1, inwhich are movable, respectively, a catch and a lockingbolt (3. The catch5 has its outer end guided in the opening I"), and its inner end isremovably pivoted to a stud You a lever 8, which is t'ulcrumed at E) andis normally held by a spring 10, whereby the catch is hold in its outerposition, said lever being operated by a tumbler 11 on the knob-shank12, whereby as the knob is turned the lever S is rocked against theaction of the spring 10 to draw the catch 5 inwardly, the spring servingto return the parts to their normal position.

' This catch is provided with the usual beveled face 13 and isreversible to permit it to be used for either right or left hand doors.

. bolt the key-locking wings 1 1 1 1 are arranged The locking-bolt 6 issymmetrical in construction and reversible and has its outer end guidedin the opening4, while its inner end is 1 provided with key-lockingmembers or plates 1 1% 1%,cither of which may be broughtintoregistration with the key-opening when the bolt is locked by simplyreversing the bolt to hold the key, as a, from being withdrawn from butone side of the door and at the same time serv- 1 ing to partially closethe key-opening to prevent malicious tampering with the interiormechanism of the lock. This bolt6 is arranged substantially midwaybetween the sides of the lock-case, and the key-locking wings or plates14 are offset or disposed in a different plane from the body of thelocking-bolt a distance substantially equal to the distance between theshank of the bolt and inner faces of the sides of the lock-case, so thatwhen the lock and bolt is reversed these wings travel in close proximityto one or the other of the sides of the case and across the key-openingin such side between the bit of the key and side of the case nearest tothe wings. The locking-bolt 6 is operated solely by the key a, and beingreversible its opposite edges are provided with opposite pairs ofengaging shoulders 16 and 17, the shoulders 16 being adapted to beengaged by the key when moving the bolt to the locked position, whilethe shoulders 17 are adapted to be engaged by the same key whenunlocking the bolt. In this form of at the extreme inner end of thelocking-bolt for the purpose of locking the key when the bolt is movedto its locked position.

A suitable tumbler 18 is pivoted at 19 to one of the sides of thelocking-case and is provided with a shoulder 20, which normally engagesand holds the locking-bolt in its unlocked position as seen in Fig. 1 orin its unlocked position as seen in Figs. 1 and 5. This tumbler is heldin its operative position in engagement with the bolt by means of aspring 21 and is tripped or moved out of engagement with thelocking-bolt against the action of the spring by means of the key (0,this operation being effected simultaneously with the movement of thebolt by the key.

It is now apparent that when the lockingbolt is moved to its lockedposition, as seen in Figs. et and 5 and also in Figs. 6 and 7, one ofthe key-locking wings is moved between the bit of the key and one of thesides of the lock-case, and thereby prevents the removal of the keythrough the key-opening in said side and at the same time partiallycovers the opening to prevent malicious interference with the interiormechanism of the lock, it being understood that the key-locking wingengages the edge of the bit nearest the handle of the key and that thekey may be inserted in and removed from the keyhole in the opposite sideof the lock at all times whether the bolt is locked or unlocked. It isalso apparent that thiskey-locking element may be used for right or lefthand doors or for locking the key at either side of the door when thebolt is locked by merely reversing the lockingbolt from the positionshown in Figs. 1. 4c, and 6 to the position seen in Figs. 5 and 7, orvice versa.

The description thus far given relates to the means for locking the keywhen the bolt is moved to its locking position, and I will now proceedto describe another construction in which the key is locked when thebolt is un locked, as seen in Figs. 10 to 14, inclusive. In thisconstruction all the parts, with the exception of the locking-bolt, arethe same as seen in Figs. 1 to 9, inclusive, and the only difference inthe locking-bolt is that the keylocking wings, as 25, are secured to thelocking-bolt, as 6, at the opposite side of the keyhole from what isshown in Figs. 1 to 9-that is, the wings project toward the inner end ofthe lock instead of toward the outer end, so that when the bolt is movedto its locked position, as seen in Fig. 10, the wings a are drawn out ofengagement with the bit of the key; but when the bolt is moved to itsunlocked position, as seen in Fig. 11, one of the wings is brought to aposition between the bit of the key and one of the sides of the lockcaseand across the key-opening in said side. This bolt 6 is also symmetricaland located midway between the opposite sides of the lock-case, and thewings 25 are offset laterally a distance substantially equal to half thewidth of the inside of the lock-case, so that by reversing the bolt thekey-locking wings are brought to the opposite side of the lock-case,thereby adapting the key-lock to be used for right or left hand doorsand for locking the key on either side of the door and at the same timepermitting the key to be inserted and removed from the opposite side ofthe door.

In Figs. 15 to 17 I have shown a furthermodified form of locking-boltand key-locking member 31, in which said member is removably attached tothe locking-bolt and may be applied to either face of said bolt and ateither side of the key-opening. The lockingbolt 30 is provided withopposite pairs of studs or pins 32 and 33, and the key-locking member 31is provided with a pair of apertures 34, which are adapted to receiveeither pair of the studs 32 or 33, it being understood that there areone pair of these studs 32 and 33 on each of the opposite faces of thelocking-bolt 30, so that the key-locking member 31 may be applied toeither pair of studs to be used for locking the key either from theinside or outside of the door or for the same purpose on right or lefthand doors.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. The combination with a key-operated locking-bolt actuated in bothdirections by the turningot' the key, of a key-lockingmemher on the boltinterlocking with the bit of the key when the bolt is moved in onedirection to prevent removal of the key, said keylocking' member beingreversible to permitit to be used to lock the key either on the insideor outside of the door.

2. The combination with a key-operated locking-bolt for right or lefthand locks, and a reversible key-locking member brought into action bythe bolt to lock the key in the keyhole when the bolt is in either ofits reverse positions.

3. The combination with a key-operated locking-bolt. of reversiblekey-locking members on the boltto cover the keyhole and lock the keyfrom withdrawal when the lockingbolt is moved in one direction.-

t. in a lock, a key-operated locking-bolt having a reversiblekey-locking member thereon to lock the key when the bolt is moved in onedirection.

In a lock. a key-operated locking-bolt, a key-lockiug plate adapted tobe secured to either side of the bolt at either side of the key to coverthe keyhole and lock the key therein.

T. The combination with a lock having a keyhole and a key-operatedlocking-bolt, of a reversible key-locking plate, means to attach theplate to the belt at either side of the keyhole whereby the bolt andplate move together to cover the keyhole and lock the key in thekeyhole.

In witness whereof I have hereunto set my hand this 29th day of June,190

BURTIS M. REVOI R.

\Vitnesses:

II. E. (,imslc, M ILDREI) M. N W1.

